Home / 28,566.47-39,421.89-15,820.06

Finding the Fourth Proportional to 28,566.47, 39,421.89 and 15,820.06

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Solution

The fourth proportional to 28,566.47, 39,421.89 and 15,820.06 is: 21,831.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,566.47 : 39,421.89 = 15,820.06 : x
  2. Step 2: Convert to fraction form
    28,566.47/39,421.89 = 15,820.06/x
  3. Step 3: Cross multiply
    28,566.47x = 39,421.89 × 15,820.06
  4. Step 4: Simplify right side
    28,566.47x = 623,656,640.47
  5. Step 5: Solve for x
    x = 623,656,640.47/28,566.47
  6. Step 6: Final answer
    x = 21,831.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.